Need help with weight?

i'm 5ft 4in and i weight 106. i eat less than 400 calories a day. im a vegetarian, i don't eat anything fried, with milk, grease, and refined sugar. i love oatmeal but they only make 2 flavors that are sugar free and 100 calories. what should i weight to be as skinny as bill kaulitz from tokio hotel and if anyone has any recipes i would appreciate it.